Low quality ends up taking longer to build over the long run. It gets harder and harder to add or change features.
If you need it to work for at least a month or two (instead of one and done, which some demoware is like). Following a few rules early on will ensure you can keep evolving it — even if it's MVP/demoware/whatever — as long as you know you need to evolve it soon after you build it!
In tech, the era of competing based on quality is long gone. The winning strategy is to get a monopoly/oligopoly and then you can let the quality decay to zero and people will have no choice but to keep paying you money (or to your handful of equally-mediocre competitors).